before they happen. The objective of the control inspection is
to provide a baseline for a successful maintenance plan. The
control inspection should describe the items of work in detail
and assign them priorities.
(See Figure 3-2.) Historic
facilities, if they are properly maintained, should cyclically
cost no more per year of life than non-historic facilities.
The Maintenance Cycle.
National Park Service, Technologies for Historic
While using the steps to doing control inspections presented
in NAVFAC MO-321 and MO-322, it may be desirable to increase the
length of time for inspection of older mechanical systems because
of the potential for worn parts or material. The additional time
gained by early detection will allow for replacement of equipment
rather than crash repair. Advance planning for maintenance also
may allow for consideration of more replacement alternatives than
would be possible when performing emergency\breakdown